Search Results for: lichenoid

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…bnormal lymphocytes are decisive for lymphoma, in this instance, lymphomatoid papulosis. 11.13.11A: Perivascular dermatosis, lichenoid, with severe subepidermal edema + 11.13.11B: Strikingly atypical lymphocytes, some of them in mitosis, in league…

Differential Diagnosis in Dermatopathology

Discussions

…n the prefix “lichen.” A denominator in common of some, but not all, diseases described clinically as lichen and lichenoid is a bandlike infiltrate of inflammatory cells in a discrete locus or across a broad front in a thickened…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Anagen Effluvium?

…s Dermatology in General Medicine. 5th ed. New York: McGraw-Hill, 1999:736. “A 32 year-old woman developed generalised lichenoid eruptions on her body followed by diffuse loss of scalp hair of the anagen effluvium type. She was receiving…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Apoptosis?

…n catagen (physiologic cell death), doing that first to a variety of interface “dermatitides,” especially “lichenoid” ones, that are associated with nonviable keratocytes referred to in times past as Civatte bodies, colloid…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…h specificity, culture is necessary. 10.17.14A: Pustular dermatitis, infundibular, and perivascular dermatitis, psoriasiform lichenoid + 10.17.14B: Preponderance of neutrophils in the lichenoid infiltrate = Infection by atypical mycobacteria…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…ticut, the designation given being generic, i.e., borreliosis. 10.9.2A: Perivascular and interstitial dermatitis, interface, lichenoid + 10.9.2B: Lymphocytes and plasma cells = Acrodermatitis chronica atrophicans Bundles of collagen in the upper…

Histologic Diagnosis of Inflammatory Skin Diseases

Advantages of the Algorithmic Method

…to label it, distinguishes a pathologist from a bird watcher. Figure 6.11 A&B. Diagnosis not known. This granulomatous, lichenoid infiltrate below an epidermis covered by scale-crust also contains lymphocytes and plasma cells, one mononuclear…

Histologic Diagnosis of Inflammatory Skin Diseases

Limitations of the Algorithmic Method

…little too dense to be deemed “vacuolar” but not dense enough or sufficiently band-like to be considered “lichenoid.” Nonetheless, by following the algorithm for “interface dermatitis” and pursuing either route,…

Histologic Diagnosis of Inflammatory Skin Diseases

Herpes gestationis

…ic in urticarial lesions of bullous pemphigoid and herpes gestationis is nearly specific for those disorders. A psoriasiform lichenoid pattern or a spongiotic psoriasiform lichenoid pattern composed of lymphocytes and eosinophils also may be…